{"id":"87e8a860-824b-4b96-b652-1049504d4ea7","shortId":"N7gpem","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","tagline":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform share the same pricing model: $0.02 per request, settled in USDC on the Base network via the x402 protocol.\n\nThe specific endpoint `/api/v1/stripe/charges/82` is listed under the title \"Premium API Access\" but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and requires a payment of 20,000 base units of USDC (0x8335…0913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /api, /pricing, /README) all returned minimal content (just a \"Connect wallet\" prompt), so detailed request/response schemas are unavailable. Without knowing what this specific endpoint returns, consumers should treat it as an exploratory or demonstration endpoint until further documentation is published.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-pricing","post-endpoint","no-api-key"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","lowpaymentfee","micropayment API","crypto-paid endpoint"],"warnings":["No documentation available — /docs, /api, /pricing, and /README all return only a 'Connect wallet' prompt","The exact functionality of /api/v1/stripe/charges/82 is unknown; the 'Premium API Access' label is not descriptive","No request or response schema is provided; consumers cannot know what to send or expect back","The endpoint path includes 'stripe/charges' which may imply Stripe integration, but no details are available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/82","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/stripe/charges/82","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what this endpoint actually does, no request/response schema, and all doc pages return only a wallet-connect prompt. The \"Premium API Access\" label is generic and 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'/api/v1/stripe/charges/82':103 '/docs':182 '/pricing':184 '/readme':185 '/request':17,34 '0.02':16,33,86,149 '000':138 '0913':144 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':160 '0x8335':143 '20':137 '300':166 '6':153 'Base network API' 'USDC API access' 'accept':129 'access':6,23,42,111,179 'address':159 'advertis':170 'ai':68 'analyt':67 'api':5,22,41,63,110,172 'base':8,25,94,139,146 'behind':43 'beyond':119 'call':12,29 'categori':64 'challeng':124 'confirm':125 'connect':192 'consum':208 'content':189 'crypto-paid endpoint' 'data':66 'decim':154 'demonstr':216 'detail':196 'document':118,180,220 'endpoint':36,52,77,102,206,217 'equal':148 'exact':114 'exploratori':214 'financ':71 'function':115 'gate':3,20 'given':150 'host':59 'includ':65 'infrastructur':74 'instant':178 'key':173 'know':202 'label':121 'learn':70 'limit':176 'list':105 'live':128 'lowpaymentfee' 'lowpaymentfee.com':38,56 'machin':69 'made':157 'mani':51 'maximum':163 'micropayment API' 'minim':188 'model':85 'network':95 'no-api-key' 'offer':53 'one':49 'page':181 'paid':9,26 'pay-per-call API' 'payment':135,155 'paywal':46 'per':11,28,87 'per-cal':10,27 'per-call-pricing' 'platform':57,80,169 'post':130 'post-endpoint' 'premium':4,21,40,109 'price':84 'prompt':194 'protocol':99 'provid':39 'publish':222 'rate':175 'request':88,131 'request/response':197 'requir':133 'return':187,207 'schema':198 'second':167 'settl':89 'share':81 'specif':101,205 'timeout':164 'titl':108 'treat':210 'unavail':200 'unit':140 'usdc':14,31,91,142,151 'usdc-base' 'util':75 'varieti':61 'via':96 'wallet':193 'web3':72 'without':201 'x402':2,19,45,98,123 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"f238479c-72bb-49de-98dc-b96278475c37","listingId":"87e8a860-824b-4b96-b652-1049504d4ea7","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/stripe/charges/82","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:34.299Z"}],"sources":[{"listingId":"87e8a860-824b-4b96-b652-1049504d4ea7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/82","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:34.299Z","lastSeenAt":"2026-04-22T23:01:56.584Z"}],"details":{"listingId":"87e8a860-824b-4b96-b652-1049504d4ea7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/82 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/82"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/82"},{"claim":"Documentation pages return only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Paying per-call for API access without traditional API keys or subscriptions","Demonstrating x402 protocol payment flows on Base","Integrating USDC micropayments into agent workflows"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-use API access","Projects already operating on the Base L2 network"],"notFor":["Users needing well-documented, production-grade APIs with clear schemas","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.023Z"},"updatedAt":"2026-04-22T23:01:56.584Z"}}